Virginia Tech Transportation Institute2015-10-062015-10-062015-10-06http://hdl.handle.net/10919/56719This data dictionary describes the video reduction variables available in the Second Strategic Highway Research Program (SHRP 2) Naturalistic Driving Study data set for use by the research community. The data dictionary is divided into six sections: revision history, related reading, list of dictionary fields, background information, list of variables, and data dictionary entries. The data dictionary entries section has three subsections: variable definitions, category definitions, and secondary task start/end times.114 pagesapplication/pdfenIn CopyrightSecond Strategic Highway Research Program (SHRP 2)Naturalistic driving studiesData reductionTechnical report